trackshot.png

This is a 512x512 PNG graphic file that is displayed in the menu when selecting the track to race on.

track.txt

This file defines various track parameters. This file is in VDrift's Configfile format.

objects/*.png

The PNG files have names corresponding to the object they belong to. These are the textures for the 3D model objects that make up the track.

objects/list.txt

This is a plain text file that defines the relationship between objects and textures, and also sets object properties. It is generated and edited with the Listedit tool which is part of the Track editor tools.